A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5985-01-500-1702
NSN 6105-01-598-9077
NSN 5925-00-179-8327
NSN 6130-00-107-8839
NSN 7035-01-512-1826
NSN 5950-01-113-7834
NSN 5915-00-239-3207
NSN 5975-00-019-1781
NSN 5950-01-152-8024
NSN 5915-01-067-9129
NSN 5920-00-201-4914
NSN 5930-01-532-0212